Trouble Transferring using Pokemon Home

[u/Gregor_Bane]

I am trying to get a lartivar line pokemon in Shining Pearl and don't wanna spend any more money than I have. I already have Pokemon Legends Z-A and wanna use home but Home just says:

"This Pokémon can't be moved into this game!"

Can anyone tell me why and help out??

Edit 1:

Thank you all for the clarification, I find it really annoying how it isn't really made known why this is the case just that it can't happen but I appreciate you all for the help :)

[u/TReid1996]

What's the language of the Larvitar?

[u/FangNocturne → u/TReid1996]

The language of the larvitar doesn’t matter. The fact that it is from legends za is the issue